Having your email up in the cloud is very convenient, until your Internet connection is down or email provider is having technical issues. In situations like these, having a searchable backup of all your emails which you can access locally can be a real life-saver. Fortunately, setting up an email archiving solution isn't all that difficult, and you can use a Raspberry Pi (or any spare machine for that matter) for that.

Even tried and trusted configurations that have proved their value through the years can be tripped up by special cases – for example, all of your users logging in with the same IP address. Experienced administrators and Bash aficionados will then enable debugging and launch a systematic search for configuration errors.

The last day of the four-day 25C3 congress in Berlin ended with an edge of suspense. In keeping with the theme of the congress, speakers had "nothing to hide" about well-known and new vulnerabilities in two of the most important Internet security protocols, SSH and SSL.

Ornithologists already know that magpies don’t really deserve their reputation. The true kleptomaniac in the world of birds is the raven. And it’s worthwhile for data dealers to make the acquaintance of Munin, a monitoring tool named after one fabled raven.